The top 1/5 of the runners advance to the finals for the track and field competition. what is the decimal value of that number? show your work !

1 divided by 5 is 0.2!

To find the decimal value of a fraction divide the numerator (1) by the denominator (5). 1 divided by 5 is 0.2

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!